I sent the wrong counter proposal to someone, plesee how do I cancel ?

Plesee help, before the person comes online and accepts

Mide: Plesee help, before the person comes online and accepts

Delete request

Ancelloti: Supprimer la demande

I don't think he can. Once you've made a counter-proposal, it's up to the manager opposite to accept or refuse.

Mide, all you can do is hope that he refuses (mp him), or that the transfer isn't validated, in which case contact an administrator to have it cancelled.
I'm going to play devil's advocate here, unless you make an aberrant mistake like saying 1M instead of 10, the manager opposite would be within his rights if he accepted your counter-proposal, even if you made a mistake.

Yes, the most important thing would be to contact an admin as soon as possible